/*
 * Licensed to the Apache Software Foundation (ASF) under one or more
 * contributor license agreements.  See the NOTICE file distributed with
 * this work for additional information regarding copyright ownership.
 * The ASF licenses this file to You under the Apache License, Version 2.0
 * (the "License"); you may not use this file except in compliance with
 * the License.  You may obtain a copy of the License at
 *
 *     http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */

package org.apache.servicecomb.toolkit.contractgen;

import javassist.ClassPool;
import javassist.CtClass;
import javassist.bytecode.AnnotationsAttribute;
import javassist.bytecode.ConstPool;
import javassist.bytecode.annotation.Annotation;

public class ContractTestUtil {

  public CtClass createCtClass(String className) throws Exception {

    ClassPool pool = ClassPool.getDefault();

    return pool.makeClass("org.apache.servicecomb.toolkit.contractgen.test." + className);
  }

  public Class putAnnotationToClass(String className, Class annotationClass) throws Exception {

    CtClass ctClass = createCtClass(className);

    ConstPool constPool = ctClass.getClassFile().getConstPool();

    AnnotationsAttribute requestMappingAnnotationAttr = new AnnotationsAttribute(constPool,
        AnnotationsAttribute.visibleTag);
    Annotation requestMapping = new Annotation(annotationClass.getName(), constPool);

    requestMappingAnnotationAttr.addAnnotation(requestMapping);
    ctClass.getClassFile().addAttribute(requestMappingAnnotationAttr);

    return ctClass.toClass();
  }
}
